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Overview

The LR-500-863 Portable Programmable Display Receiver offers crystal-clear audio performance and mult-channel flexibility for your 863 MHz assistive listening system. Our signature Look & Listen (TM) LCD display gives you and your users a quick, easy way to check the programming status, channel selection, battery level, signal strength, and more. And Listen Technologies’ SmartCharge (TM) system built into each unit helps to prevent overcharging (when used with NiMH rechargeable AA batteries).

Easy to use and easy to program, the LR-500 is approved for assistive listening use in the U.S. by the FCC and offers you an industry-leading option for meeting the needs of your visitors or customers.

*Note: Specified for use in Europe

Includes

One (1) LR-500-863 Portable Programmable Display RF Receiver (863 MHz)
One (1) Quick Reference Card
One (1) Limited Lifetime Warranty Program Card (863 MHz)
One (1) FM System Design Guide and Manual Card (863 MHz)

Highlights

  • Compact, portable, and programmable digital receiver
  • Can receive up to 17 wide-band channels
  • Easy-to-read LCD display with programming status, battery level, channel lock, and signal strength readings
  • Channel seek capabilities and channel selector buttons on the front of the unit
  • 70 dB signal-to-noise ratio for industry-leading sound quality
  • Built-in SmartCharge feature prevents overcharging
  • Simple drop-in charging compatible with Listen Technologies’ charging cases and plugs
  • Compatible with mono and stereo headphones
  • Uses standard AA alkaline or NiMh rechargeable batteries
  • Limited lifetime warranty and hassle free support from Listen Technologies
Configurations & Architectural Specs

Architectural Specs

The RF receiver shall be capable of receiving on 17 wide band channels with a SNR of 70dB or greater. The receiver shall be programmable to electronically lock out unneeded channels. The receiver shall be capable of seeking channels. The device shall be able to be locked on a single channel. The device shall have an adjustable squelch. The device shall have an audio frequency response of 50 Hz to 15 KHz, ‘±3 dB. The device will incorporate a stereo headset jack that allows the user to plug in either a mono or stereo headset. The device shall incorporate an LCD display that indicates channel, battery level, low battery, battery charging, and RF signal strength. The receiver shall be able to function in both DX and Local mode. The unit shall operate off of 2 AA batteries. The receiver shall incorporate automatic battery charging circuitry for recharging of NiMH batteries. The Listen LR-500-863 is specified.

Product Specifications
SpecificationLR-500-863

Audio

Frequency Response50 Hz - 15 kHz (+/-3 dB)
Signal-to-Noise Ratio70 dB (A-Weighted)
Audio Output Jacks3.5 mm connector, unbalanced, 0dBu nominal output level, 16 mW maximum, impedance 32 Ohms
Distortion< 2% total harmonic distortion (THD) at 80% deviation

Controls

User ControlsChannel up/down, SEEK, volume, Alkaline/NiMH battery switch
ProgrammingChannel Lock Out, Channel Lock, DX/Local, squelch

Indicators

LCDChannel Designation, lock status, signal strength indication, programming
LEDsRed, illuminated when unit is on. Flashes when batteries are low, or charging. Flashes when locked and SEEK is pushed.

RF

Frequency Range863.050 - 864.950 MHz
Number of Channels17 Wideband
Sensitivity.6uV typical, 1 uV maximum for 12 dB sinad
Frequency Accuracy± .005% stability 32 to 122º (0 to 50ºC)
SquelchProgrammable in 20 steps, automatic on loss of RF signal
Antenna TypeIntegrated External Antenna

Power

Power Supply7.5VDC, center positive 300mA. Drop in contact points for use with charging cases. Power supply not included (LA-208-03)
Power Supply Connector2.3 mm OD by .7mm ID, barrel type
Battery Type2 AA batteries, alkaline or NiMH
Battery Life20 hours alkaline (LA-361), 10 hours NiMH rechargeable (LA-362)
Battery Charging TimeFully Automatic, 13 hours maximum
ComplianceRoHS, WEEE, UL, PSE, CE, CUL, TUV, CB compliant

Physical

Width3.00 in. (7.6 cm)
Height5.00 in. (13.0 cm)
Depth1.00 in. (2.5 cm)
Unit Weight with Batteries5.8 oz. (164 g)
Shipping Weight1.0 lb. (0.45 kg)
WeightDark Grey with white silk screening
Weight3.9 oz. (111 g)
DoorManually Lockable. Up, down, and power buttons through door. Other controls behind door (see controls)

Environmental

Temperature - Operation-10 C (14 F) to +40 C (104 F)
Temperature - Storage-20 C (-4 F) to +50 C (122 F)
Relative Humidity0 to 95% Relative Humidity, non condensing

Compliance

SafetyCE, ETSI, RoHS
Requirements
Used With
Accessories
FAQ
QWhat is the difference between the LR-400 and the LR-500?
AThe LR-500 gives the user an opportunity to lockout unused channels and has the controls on the outside of the front door.
QCan the LR-500 be used with multiple transmitters?
AYes. We recommend the LR-500 for use with multiple transmitters. The LR-500 is programmable and can be set to just those channels you need.
QHow many receivers can I have in a system?
AAs many as you need, the number is endless.
QHow many channels can I program into the LR-500?
AOne to 57. The receiver has 57 channels and you can program it to have just the channels you want to access. It can be a two channel receiver, a 12 channel receiver, or keep all channels.
QHow long do the batteries last on the LR-500 receiver?
AAlkaline batteries last 30 hours. NiMH rechargeable batteries last 15 hours (72 MHz and 216 MHz). With 863 MHz, Alkaline batteries last 20 hours and NiMH rechargeable batteries last 10 hours.
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